Short Wave Sportfishing wrote:
On Thu, 26 Jun 2008 15:37:11 -0000, "KØHB"
wrote:

"Short Wave Sportfishing" wrote in message
...

If I were you, I might consider SS four blade - your top end will stay
about the same, but oh my gosh, the acceleration is outstanding.
I'm currently running a 3-blade Viper SS, 19 pitch.

Do what I did - stick with the same pitch only four blade.

Out of curiosity, how old is your engine? I just heard something
today kind of interesting - they changed the deflector pins in certain
2006 engines - don't know if the 90 was covered in the change.

That could account for the increase in performance also.


Deflector pins? What, please, are these, and what do they do?

"Short Wave Sportfishing" wrote in message
...
..

Out of curiosity, how old is your engine? I just heard something
today kind of interesting - they changed the deflector pins in certain
2006 engines - don't know if the 90 was covered in the change.


It's a 2005, about 400 hours on it. The invoice for the "3-year checkup" only
shows changed lower unit lube, changed fuel filter, inspected plugs,
inspected/replaced water pump rotor, reflashed computer with 3 updates. No
comment about any other adjustments or replacements or deflector pins. "See you
in three more years"

Hans/MN
--
Come sit by my fire and warm your bones. Share a bracing drink and a few tales.
"The wind was picking up, the bite was gone cold, my hands were numb, nose
was running, I had to pee, and I was thinking of heading for the dock, when...."

On Jun 25, 5:20*pm, "KØHB" wrote:
OK, I've had several more outings since the first post, and this increase is
REAL. I consistently get 200-300 more RPM's and a corresponding increase in GPS
MPH. This is with the boat fully loaded, all equipment, full of fuel, etc..

Absolutely nothing has changed in this rig except for the 3-year maintenance
(which included reflashing the firmware.

I'm considering a more aggressive prop!

Hans/MN
--

Come sit by the fire and warm your bones. Share a bracing drink and a few tales.
"The wind was picking up, the bite was cold, my hands were numb, nose was
running, I had to pee, and I was thinking of heading for the dock, when....."

On Jun 25, 5:20*pm, "KØHB" wrote:
OK, I've had several more outings since the first post, and this increase is
REAL. I consistently get 200-300 more RPM's and a corresponding increase in GPS
MPH. This is with the boat fully loaded, all equipment, full of fuel, etc..

Absolutely nothing has changed in this rig except for the 3-year maintenance
(which included reflashing the firmware.

I'm considering a more aggressive prop!

Hans/MN
--

Come sit by the fire and warm your bones. Share a bracing drink and a few tales.
"The wind was picking up, the bite was cold, my hands were numb, nose was
running, I had to pee, and I was thinking of heading for the dock, when....."

I have been on Shortwaves Ranger with the 4 Blade. No question, if you
can go with a SS 4Blade, do it. And hopefully SW won't throw me
overboard next time we are out, but if I were you, I might email him
and see if he can point you in the right direction.. he knows guys. He
won't steer you wrong...

On Jun 25, 5:20*pm, "KØHB" wrote:
OK, I've had several more outings since the first post, and this increase is
REAL. I consistently get 200-300 more RPM's and a corresponding increase in GPS
MPH. This is with the boat fully loaded, all equipment, full of fuel, etc..

Absolutely nothing has changed in this rig except for the 3-year maintenance
(which included reflashing the firmware.

I'm considering a more aggressive prop!

Hans/MN
--

Come sit by the fire and warm your bones. Share a bracing drink and a few tales.
"The wind was picking up, the bite was cold, my hands were numb, nose was
running, I had to pee, and I was thinking of heading for the dock, when....."

I agree, it probably has a lot/everything to do with the firmware
upgrade. These engines now are as advanced as some of the port fuel
injection systems I used to work on. When you have digital control of
fuel and air, a lot can be done with software/firmware to increase
performance. I wonder if the factory guys did a bunch of testing over
the years and found that they could run them at a higher RPM than
origionally specs would have suggested. Of course all of this suggests
that if you could dip into the board, you could make on the fly mods
of your own like the black boxes sold for diesel trucks and gasoline
hotrods.